German as a Second Language and Multilingualism explores how people acquire German as an additional language and how education can succeed when different languages and linguistic biographies meet. The degree programme at Bielefeld University combines linguistic foundations with theories of language acquisition, language assessment and didactics. Key topics include multilingualism in everyday life and in schools, German as a second language (including for newly arrived learners), and language-sensitive teaching across subjects. Practice-oriented components and changing specialist modules support the development of an individual profile. The aim is to support learners so that language becomes a bridge to participation and educational success and so that schools make use of multilingualism as a resource. Career prospects include work in schools and teaching, language support and advisory roles, educational projects, as well as the development of assessment tools, concepts and teaching materials.